You think? I mean, Martha's great love for Jon hasn't stopped her from rubbing all over Lionel (metaphorically), so I can believe she'd find Clark to be a sufficient silver-lining for the meteor shower causing Jon's death. Especially given that it's really not at all right or fair to blame Clark for that, first of all, and second, because she wanted a child so much. I could see Martha buying into the idea that God gives with one hand and takes away with the other, so I don't know ... I don't have difficulty imagining her still taking Clark in even if the meteors killed Jon.

But I expect she would seriously resent having to go to her dad because he hated Jonathan so much.

Nah. Martha's really pragmatic and again, canonically, she seems to have gotten over Jonathan's death just fine. She might not be chipper about going to her dad, but she'd do it if she had to and they'd probably eventually reach some kind of rapproachment with each other.